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  • 25-01-2017
  • Mathematics
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Simplify -(-2a 13) (-9a - 2) - (-7a - 3). 12 -12 14a - 12 14a - (-12)

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Аноним Аноним
  • 25-01-2017
-450a14 - 100a13 - 60679a + 309 ——————————————————————————————— 25
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